Roget's Thesaurus: Entry 601 (Necessity)

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#601. Necessity. -- N. involuntariness; instinct, blind impulse; inborn proclivity, innate proclivity; native tendency, natural tendency; natural impulse, predetermination.

necessity, necessitation; obligation; compulsion &c. 744; subjection &c. 749; stern necessity, hard necessity, dire necessity, imperious necessity, inexorable necessity, iron necessity, adverse necessity; fate; what must be.

destiny, destination; fatality, fate, kismet, doom, foredoom, election, predestination; preordination, foreordination; lot fortune; fatalism; inevitableness &c. adj.; spell &c. 993.

star, stars; planet, planets; astral influence; sky, Fates, Parcae, Sisters three, book of fate; God's will, will of Heaven; wheel of Fortune, Ides of March, Hobson's choice.

last shift, last resort; dernier ressort[Fr]; pis aller &c. (substitute) 147[Fr]; necessaries &c. (requirement) 630.

necessarian[obs], necessitarian[obs]; fatalist; automaton.

V. lie under a necessity; befated[obs], be doomed, be destined &c. in for, under the necessity of; have no choice, have no alternative; be one's fate &c. n. to be pushed to the wall to be driven into a corner, to be unable to help.

destine, doom, foredoom, devote; predestine, preordain; cast a spell &c. 992; necessitate; compel &c. 744.

Adj. necessary, needful &c (requisite) 630.

fated; destined &c. v.; elect; spellbound

compulsory &c. (compel) 744; uncontrollable, inevitable, unavoidable, irresistible, irrevocable, inexorable; avoidless[obs], resistless.

involuntary, instinctive, automatic, blind, mechanical; unconscious, unwitting, unthinking; unintentional &c. (undesigned) 621; impulsive &c. 612.

Adv. necessarily &c. adv.; of necessity, of course; ex necessitate rei[Lat]; needs must; perforce &c. 744; nolens volens[Lat]; will he nil he, willy nilly, bon gre mal gre[Fr], willing or unwilling, coute que coute[Fr].

faute de mieux[Fr]; by stress of; if need be.

Phr. it cannot be helped; there is no help for, there is no helping it; it will be, it must be, it needs to be, it must be so, it will have its way; the die is cast; jacta est alea[obs][Lat]; che sara sara[French]; "it is written"; one's days are numbered, one's fate is sealed; Fata obstant[Latin]; diis aliter visum[obs][Latin]; actum me invito factus[Latin], non est meus actus[Latin]; aujord'hui roi demain rien[French]; quisque suos patimur manes [Latin][Vergil];"The moving finger writes and having writ moves on. Nor all your piety and wit can bring it back to cancel half a line, nor all your tears wash out a word of it."[Rubayyat of Omar Khayyam].